// this file tests whether friendships are reciprocated,
// and that old messages cannot be seen
// it is similar to Person.example1.txt and Person.example2.txt
// but _without_ the runtime exception
// correct output is in mutual-output.txt
Kim registers
Pat registers
Kim queries Pat
Pat queries Kim
Kim posts Only Kim can read this
Kim meets Pat
Kim queries Pat
Pat posts Friends are awesome
Kim posts I agree
Kim reads
Pat reads